140 citations · 752 across the 21 of their papers we have counts for
21 papers
Exact quantum spin liquids with topological order on maple-leaf and trellis lattices
Li Ern Chern, Roderich Moessner, Claudio Castelnovo
We construct spin models with bond-dependent anisotropic interactions on the penta-coordinated maple-leaf and trellis lattices, which yield exact quantum spin liquid…
Mapping vortices to anyons in toric code phases of generalized Kitaev models
Li Ern Chern, Roderich Moessner, Claudio Castelnovo
We present a comprehensive theory of mapping flux excitations, or vortices, to electric and magnetic particles in the toric code phases of generalizations of the Kitaev honeycomb m…
A pseudofermion functional renormalization group study of dipolar-octupolar pyrochlore magnets
Li Ern Chern, Félix Desrochers, Yong Baek Kim +1
Motivated by recent experiments on CeZrO that reveal a dynamic, liquid-like ground state, we study the nearest neighbor XYZ Hamiltonian of dipolar-octupolar pyrochlore…
Topological phase diagrams of in-plane field polarized Kitaev magnets
Li Ern Chern, Claudio Castelnovo
While the existence of a magnetic field induced quantum spin liquid in Kitaev magnets remains under debate, its topological properties often extend to proximal phases where they ca…
Symmetry fractionalization in the gauge mean-field theory of quantum spin ice
Félix Desrochers, Li Ern Chern, Yong Baek Kim
Symmetry fractionalization is a ubiquitous feature of topologically ordered states that can be used to classify different symmetry-enriched topological phases and reveal some of th…
Competing quantum spin liquids, gauge fluctuations, and anisotropic interactions in a breathing pyrochlore lattice
Li Ern Chern, Yong Baek Kim, Claudio Castelnovo
We use the projective symmetry group analysis to classify the quantum spin liquids on the pyrochlore magnet with a breathing anisotropy. We find 40 spin liqu…
Geometrical frustration versus Kitaev interactions in BaCo(AsO)
Thomas Halloran, Félix Desrochers, Emily Z. Zhang +12
Recently, Co-based honeycomb magnets have been proposed as promising candidate materials to host the Kitaev spin liquid state. One of the front-runners is BaCo(AsO) (BC…
Collective magnetic Higgs excitation in a pyrochlore ruthenate
Dirk Wulferding, Junkyeong Kim, Mi Kyung Kim +13
The emergence of scalar Higgs-type amplitude modes in systems where symmetry is spontaneously broken has been a highly successful, paradigmatic description of phase transitions, wi…
Competing and dipolar-octupolar quantum spin liquids on the pyrochlore lattice: application to CeZrO
Félix Desrochers, Li Ern Chern, Yong Baek Kim
Recent experiments on the dipolar-octupolar pyrochlore compound CeZrO indicate that it may realize a three-dimensional quantum spin liquid (QSL). In particular, the ana…
Theoretical study of quantum spin liquids in hyper-hyperkagome magnets: classification, heat capacity, and dynamical spin structure factor
Li Ern Chern, Yong Baek Kim
Recent experiments suggest a quantum spin liquid ground state in the material PbCuTeO, where moments are coupled by antiferromagnetic Heisenberg interactions into a…
Topological magnons for thermal Hall transport in frustrated magnets with bond-dependent interactions
Emily Z. Zhang, Li Ern Chern, Yong Baek Kim
Thermal transport in topologically-ordered phases of matter provides valuable insights as it can detect the charge-neutral quasiparticles that would not directly couple to electrom…
Magnetic vortex liquid and anomalous thermal Hall conductivity in frustrated magnets with bond-dependent interactions
Li Ern Chern, Finn Lasse Buessen, Yong Baek Kim
Recently, the observation of large thermal Hall conductivities in correlated insulators with no apparent broken symmetry have generated immense interest and debates on the underlyi…
Sign structure of thermal Hall conductivity for in-plane-field polarized Kitaev magnets
Li Ern Chern, Emily Z. Zhang, Yong Baek Kim
The appearance of half-quantized thermal Hall conductivity in -RuCl in the presence of in-plane magnetic fields has been taken as a strong evidence for Kitaev spin liquid. A…
Emergence of a nematic paramagnet via quantum order-by-disorder and pseudo-Goldstone modes in Kitaev magnets
Matthias Gohlke, Li Ern Chern, Hae-Young Kee +1
The appearance of nontrivial phases in Kitaev materials exposed to an external magnetic field has recently been a subject of intensive studies. Here, we elucidate the relation betw…
Ferromagnetic Kitaev interaction and the origin of large magnetic anisotropy in -RuCl
J. A. Sears, Li Ern Chern, Subin Kim +4
-RuCl is drawing much attention as a promising candidate Kitaev quantum spin liquid. However, despite intensive research efforts, controversy remains about the form of the b…
Magnetic field induced quantum phases in a tensor network study of Kitaev magnets
Hyun-Yong Lee, Ryui Kaneko, Li Ern Chern +4
Recent discovery of the half quantized thermal Hall conductivity in -RuCl, a candidate material for the Kitaev spin liquid, suggests the presence of a highly entangled quant…
Magnetic Field Induced Competing Phases in Spin-Orbital Entangled Kitaev Magnets
Li Ern Chern, Ryui Kaneko, Hyun-Yong Lee +1
There has been a great interest in magnetic field induced quantum spin liquids in Kitaev magnets after the discovery of neutron scattering continuum and half quantized thermal Hall…
Magnetic Order with Fractionalized Excitations: Applications to
Li Ern Chern, Yong Baek Kim
A recent inelastic neutron scattering experiment on uncovers an unusual scattering continuum in the spin excitation spectrum despite the…
Theory of a quantum spin liquid in hydrogen-intercalated honeycomb iridate, H3LiIr2O6
Kevin Slagle, Wonjune Choi, Li Ern Chern +1
We propose a theoretical model for a gapless spin liquid phase that may have been observed in a recent experiment on . Despite the insulating and non-magne…
Fermionic spin liquid analysis of the paramagnetic state in Volborthite
Li Ern Chern, Robert Schaffer, Sopheak Sorn +1
Recently, thermal Hall effect has been observed in the paramagnetic state of Volborthite, which consists of distorted Kagome layers with local moments. Despite the appearan…
Quantum spin liquid and magnetic order in a two-dimensional non-symmorphic lattice: considering the distorted Kagome lattice of Volborthite
Li Ern Chern, Kyusung Hwang, Tomonari Mizoguchi +2
The Kagome-lattice-based material, Volborthite, , has been considered as a promising platform for discovery of unusual quantum ground st…